rate_bit         1122 include/sound/pcm.h unsigned int snd_pcm_rate_bit_to_rate(unsigned int rate_bit);
rate_bit          528 sound/core/pcm_misc.c unsigned int snd_pcm_rate_bit_to_rate(unsigned int rate_bit)
rate_bit          533 sound/core/pcm_misc.c 		if ((1u << i) == rate_bit)